US PATENT SUBCLASS 277 / FOR 207
ANNULUS WITH DUCT OR PASSAGEWAY (277/201)

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

FOR 207ANNULUS WITH DUCT OR PASSAGEWAY (277/201) {1}
FOR 208  DF  .~> Elongated (277/202)

DEFINITION

Classification: 277/FOR.207

Foreign art collections comprising an annular packing element having an opening which extends through a wall thereof.